People gather onstage as preparations take place inside Quicken Loans Arena for the Republican National Convention in Cleveland, Ohio, Saturday, July 16, 2016. A year ago, few imagined Donald Trump as a headliner at the Republican National Convention, let alone as its star. (AP Photo/Patrick Semansky)

A pedestrian walks past the Quicken Loans Arena as setup continues in advance of the Republican National Convention in Cleveland, Ohio July 15, 2016. REUTERS/Aaron P. Bernstein

An American flag hangs opposite the Quicken Loans Arena as setup continues in advance of the Republican National Convention in Cleveland, Ohio July 15, 2016. REUTERS/Aaron P. Bernstein

A bar is seen outside the Quicken Loans Arena in advance of the Republican National Convention in Cleveland, Ohio July 15, 2016. REUTERS/Aaron P. Bernstein

An image of U.S. Republican presidential candidate Donald Trump is seen in a luxury box at the Quicken Loans Arena as setup continues in advance of the Republican National Convention in Cleveland, Ohio July 16, 2016. REUTERS/Aaron P. Bernstein

Signs remind people in the "Team Trump" box that they will be on camera, as preparations continue on the floor of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Jonathan Ernst

Paul Manafort, campaign manager to Republican Presidential Candidate Donald Trump, and his wife Kathleen ride the elevator at the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Brian Snyder

Paul Manafort (C), campaign manager to Republican Presidential Candidate Donald Trump, walks through the halls at the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Brian Snyder

A worker walks with a Trump-Pence campaign sign in an arena stairwell as preparations continue on the floor of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Jonathan Ernst

A doorway leads to the "Team Trump" box as preparations continue on the floor of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Jonathan Ernst

A doorway leads to the "Team Trump" box as preparations continue on the floor of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Jonathan Ernst

Paul Manafort, campaign manager to Republican Presidential Candidate Donald Trump, talks on the phone from the floor of the Republican National Convention in Cleveland, U.S., July 17, 2016. REUTERS/Rick Wilking

Trump Campaign Chairman Paul Manafort is surrounded by reporters on the floor of the Republican National Convention at Quicken Loans Arena, Sunday, July 17, 2016, in Cleveland. (AP Photo/Matt Rourke)

A demonstrator has a sticker taped over her mouth during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Demonstrators join in a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Polic hem in demonstrators with their bicycles as they join in a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Police block a downtown street with their bicycles during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Police block a downtown street with their bicycles during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

A police officer holds his weapon in a vehicle as they monitor a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Demonstrators march by police during the Shut Down Trump & the RNC protest on Sunday, July 17, 2016, in Cleveland. The Republican National Convention starts Monday. (AP Photo/Alex Brandon)

A reporter talks to police dressed in tactical gear as they block a downtown street during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

A demonstrator yells during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC", ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Activists carry a prop during a protest march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC," ahead of the Republican National Convention in Cleveland, Ohio, U.S., July 17, 2016. REUTERS/Adrees Latif

A demonstrator stands in front of police officers dressed in tactical gear during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Police on bicycle and horseback block a downtown street during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

A demonstrator holds a sing during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC", ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Demonstrators with "Code Pink" chant as they are moved by horse mounted police during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S., July 17, 2016. REUTERS/Lucas Jackson

Police officers use bicycles to create cordons around a protest march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC," ahead of the Republican National Convention in Cleveland, Ohio, U.S., July 17, 2016. REUTERS/Adrees Latif

Police officers use bicycles to create cordons around a protest march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC," ahead of the Republican National Convention in Cleveland, Ohio, U.S., July 17, 2016. REUTERS/Adrees Latif

A police officer leans against a sign along a downtown street during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Journalists focus their cameras towards a protest march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC," ahead of the Republican National Convention in Cleveland, Ohio, U.S., July 17, 2016. REUTERS/Adrees Latif

Signs placed by Trump protesters rest on the street outside of the Republican National Convention in Cleveland, Ohio, U.S., July 18, 2016. REUTERS/Lucas Jackson

Trump support buttons are displayed on a board outside of the Republican National Convention in Cleveland, Ohio, U.S., July 18, 2016. REUTERS/Lucas Jackson

Trump supporters hold a Trump banner in front of the stage at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Brian Snyder

Republican U.S. presidential candidate Donald Trump appears onstage in a blaze of lights at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mike Segar

Republican U.S. Presidential Candidate Donald Trump takes to the stage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mike Segar

Republican U.S. Presidential Candidate Donald Trump appears on stage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mike Segar

Republican U.S. Presidential Candidate Donald Trump appears on stage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mike Segar

Republican U.S. Presidential Candidate Donald Trump greets his wife Melania on stage at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Jim Young

Melania Trump takes the stage after her introduction by her husband, Republican U.S. Presidential Candidate Donald Trump, at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Jim Young

Republican Presidential Candidate Donald Trump greets his wife Melania on stage at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Jim Young TPX IMAGES OF THE DAY

Melania Trump takes the stage after her introduction at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Jim Young

Melania Trump, wife of Republican U.S. presidential candidate Donald Trump, waves as she arrives to speak at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mike Segar

Melania Trump, wife of Republican U.S. presidential candidate Donald Trump, applauds during her speech at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Jim Young

Melania Trump, wife of Republican U.S. presidential candidate Donald Trump, speaks at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Rick Wilking

Republican U.S. presidential candidate Donald Trump appears onstage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mark Kauzlarich

Republican presidential candidate Donald Trump gives a thumbs up as he arrives to introduce his wife Melania during the Republican National Convention, Monday, July 18, 2016, in Cleveland. (AP Photo/Evan Vucci)

Melania Trump, wife of Republican Presidential Candidate Donald Trump, speaks during first day of the Republican National Convention in Cleveland, Monday, July 18, 2016. (AP Photo/Matt Rourke)

Melania Trump, wife of Republican U.S. presidential candidate Donald Trump, speaks at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Aaron Josefczyk

Melania Trump, wife of Republican U.S. presidential candidate Donald Trump, speaks at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Aaron Josefczyk

Republican U.S. presidential candidate Donald Trump appears onstage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Carlo Allegri

Republican U.S. presidential candidate Donald Trump appears onstage to introduce his wife Melania before she spoke at the Republican National Convention in Cleveland, Ohio, U.S., July 18, 2016. REUTERS/Carlo Allegri

Melania Trump greets her husband Republican U.S. presidential candidate Donald Trump onstage at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mark Kauzlarich

Republican U.S. presidential candidate Donald Trump appears onstage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Mike Segar

Republican U.S. presidential candidate Donald Trump arrives to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Aaron P. Bernstein

Republican U.S. presidential candidate Donald Trump appears onstage to introduce his wife Melania at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Brian Snyder

Republican U.S. presidential candidate Donald Trump waves as he leaves the stage at the Republican National Convention in Cleveland, Ohio, U.S. July 18, 2016. REUTERS/Aaron P. Bernstein

Members of Republican U.S. presidential candidate Donald Trump's family, son Donald Trump Jr. (L), daughter Ivanka (2nd from L), son Eric (2nd from R) and daughter Tifffany celebrate after their father won the nomination at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Aaron P. Bernstein

Children of Republican U.S. presidential candidate Donald Trump, Donald Jr. and Ivanka, celebrate with the New York delegation as they celebrate that state putting Donald Trump over the top to clinch nomination at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Brian Snyder

Children of Republican U.S. presidential candidate Donald Trump, Donald Jr (C), Ivanka and Eric (R), celebrate with the New York delegation as they celebrate that state putting Donald Trump over the top to clinch nomination at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Brian Snyder

The New York delegation puts Republican presidential candidate Donald Trump over the top to win the 2016 Republican presidential nomination during the second session at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Aaron Josefczyk

A delegate with a beaded Trump hat is seen at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Jim Young

Delegate Jake Byrd celebrates Republican U.S. presidential candidate Donald Trump's nomination during the second day of the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Brian Snyder

The New York delegation puts Republican U.S. presidential candidate Donald Trump over the top to win the 2016 Republican presidential nomination during the second session of the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Rick Wilking

The New York delegation puts Republican presidential candidate Donald Trump over the top to win the 2016 Republican presidential nomination during the second session at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Mike Segar

Delegates cheer during the nomination process for Republican U.S. Presidential candidate Donald Trump at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Mark Kauzlarich

Supporters of Republican U.S. presidential nominee Donald Trump attempt to obscure a protestor from the activist group Code Pink, who is holding an anti-racism and anti-hate banner, as she interrupts the proceedings during the second day of the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Aaron P. Bernstein TPX IMAGES OF THE DAY

Tifffany Trump speaks about her father, Republican U.S. presidential nominee Donald Trump, at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Brian Snyder TPX IMAGES OF THE DAY

Donald Trump's daughter Tiffany Trump speaks during the second day of the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Aaron Josefczyk

Donald Trump Jr speaks on the second day of the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Aaron Josefczyk

Donald Trump Jr. pumps his fist after speaking about his father, Republican U.S. presidential nominee Donald Trump, during the second day at the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Mike Segar

Donald Trump Jr. speaks about his father, Republican U.S. presidential nominee Donald Trump, during the second day of the Republican National Convention in Cleveland, Ohio, U.S. July 19, 2016. REUTERS/Mike Segar

California delegate Jake Byrd reacts as New York delegate Bob Hayssen holds up a Trump flag during the second day session of the Republican National Convention in Cleveland, Tuesday, July 19, 2016. (AP Photo/John Locher)